File writing issue with Ethernet in STM32Cube F4 V1.27.0

[mclapd]

Hi,

I ported my project from F4 V1.26.2 to V1.27.0 and found an issue related to file corruption on the sd card after transferring the file through Ethernet (by FileZilla FTP). The weird point is transferred file size is correct but the file contents are different.

It looks like TCP client/server, VNC, FTP, etc work fine. So, I thought the problem comes from SD driver or file system (FatFS) however, there was no such update.

Does anyone have a similar issue and resolution?

Thanks.

Chris

[Imen.D]

Hello @mclapd​ ,

You might want to review this post F4 + FreeRTOS + LwIP. Bad default LWIP_RAM_HEAP_POINTER after updating to v1.9.0. and see if you have similar issue.

When your question is resolved, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Imen

[mclapd]

Hi Imen,

I am using external SDRAM for LwIP like below to use various Ethernet services such as TCP client/server, VNC, web server, FTP, syslog, etc...

So, it looks different issue from mine. Thanks anyway.

/** heap (ram_heap) in external SDRAM */
#ifdef USE_EXTERNAL_SDRAM_FOR_LWIP
uint8_t LwipHeapOnSdram[MEM_SIZE_ALIGNED + (2U*SIZEOF_STRUCT_MEM)] __attribute__((section(".sdram")));
#endif
 
....
 
  /* align the heap */
#ifdef USE_EXTERNAL_SDRAM_FOR_LWIP
  ram = (u8_t *)LwipHeapOnSdram;
#else
  ram = (u8_t *)LWIP_MEM_ALIGN(LWIP_RAM_HEAP_POINTER);
#endif
  /* initialize the start of the heap */
  mem = (struct mem *)(void *)ram;
  mem->next = MEM_SIZE_ALIGNED;
  mem->prev = 0;
  mem->used = 0;
  /* initialize the end of the heap */
  ram_end = ptr_to_mem(MEM_SIZE_ALIGNED);
  ram_end->used = 1;
  ram_end->next = MEM_SIZE_ALIGNED;
  ram_end->prev = MEM_SIZE_ALIGNED;
  MEM_SANITY();

[mclapd]

And I found there is no issue with HAL_ETH_LEGACY_MODULE_ENABLED. So, it seems the issue happens with the new Ethernet driver.